Cognitive radio technique is the next step toward efficient wireless bandwidth utilization.
While some of the spectrum bands (unlicensed band) have been increasingly used, most of …

The next generation wireless communication system will likely be heterogeneous networks,
as various technologies can be integrated on heterogeneous networks. A mobile multiple …

In wireless/mobile networks, users freely and frequently change their access points (APs)
while they are communicating with other users. To support the mobility of mobile nodes …

Femtocells are a promising technology to improve network performance with the short-
range, low-power, and cost-beneficial small base stations. A femtocell is a low-power …

The design of the seamless handoff is the key issue in the next‐generation mobile networks.
A new broadband wireless access, called WiMAX, has been specified in the IEEE 802.16 e …

Abstract In Next Generation Wireless Networks (NGWN), lots of information, such as voice
and video data, will be used in All-IP networks. It is important note that seamless service for …

Abstract The LTE (Long Term Evolution) technologies defined by 3GPP is the last step
toward the 4th generation (4G) of radio technologies designed to increase the capacity and …

This paper reports our ongoing work investigating the structural features of scientific
collaboration based on metadata collected from a scientific data repository (SDR). The …

SHA-2, the current hash standard may need replacement in near future considering the
attacks on MDx family of Hash functions including SHA-0 and SHA-1. National Institute of …

The femtocell networks, which is a small cellular base station in home and small business
environment, is an attractive solution for operators to improve indoor coverage and network …